entity-framework - Adding attributes to Entity Framework autogenerated properties

Question

I need to add some attributes to properties that were autogenerated by Entity Framework and do not want to lose them when regenerating objects. I don't want to touch T4 either.

Looking interenet I found that the partial class can be added MetaDataType like:

<MetadataType(GetType(Employee_Metadata))> _
Partial Public Class employee
...

And then create another class where we add the actual metadata to properties:

Public Class Employee_Metadata

    <Category("General"), DisplayName("Name"), Description("Employee name.")> _
    Public Property employee_name() As String
        Get
            Return _employee_name
        End Get
        Set(value As String)
            _employee_name = value
        End Set
    End Property
    Private _employee_name As String

End Class

Now, what else I need to do to get access to the attributes? I am currently binding a UI component to class employee autogenerated property "employee_name" (using MVVM). Do I need to change further something in my partial class or should I change the databinding itself (WPF in this case)?

Answer 1

这应该有效：

1. 为设计器中的映射属性选择一个不同的名称（例如employee_name_private）并将设计器中的 setter 和 getter 标记为Private。

2. 在部分类文件中定义具有所需属性的公共属性：

   Partial Public Class Employee
   
       <Category("General"), DisplayName("Name"), Description("Employee name.")> _
       Public Property employee_name() As String
           Get
               Return employee_name_private
           End Get
           Set(value As String)
               employee_name_private = value
           End Set
       End Property
   
   End Class